I just purchased a Dell XPS 17. The problem while playing video game is, that randomly the sound starts crackling for 1 or 2 seconds and the screen freezes with it, or the FPS drops down to 5 or lower. This is really annoying during playing.
I thought it might be problems with the fan on the laptop, or the AC adapter doesn't give energy for the laptop so it chokes down? It mostly happens, when the laptop gets pretty hot.
Also I tried to contact the Dell customer service, but it says i purchased the Laptop in the United Kingdom, which I didn't. I used the Dell Customer service from the U.S. and used the chat without any problems. When i try to E-mail them, it gives me an error, that it cannot read my system components (I don't remember exactly what it said, might be something else, but it was an error).
Thank you for your attention.
Try uninstall Mac Afee?
If not, install the software called LatencyMon and launch it to diagnostic where does the problem come from.